WaveMan · Form 4
Insider buying on Jul 23, 2026
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Insider buying on Jul 23, 2026

On Jul 23, 2026, 24 insiders at 18 companies filed 51 purchases reported on Form 4, worth $27.4M in all, with a median purchase of $74.4K. The largest was UAW Chrysler Retirees Medical Benefits Plan, 10% owner of CIK 1841514, who reported buying 5,655 shares worth $5.0M. Officers accounted for 19 purchases, directors who are not officers for 15, and 10% owners with no board or officer role for 13. Chief executives and chief financial officers filed 13 purchases: Huang Jack Jiajia, Chief Executive Officer, Director, 10% owner of 51Talk Online Education Group (COE); Smith Matthew James, President & CEO, Director of Rhinebeck Bancorp, Inc. (RBKB); Davis Conn Q., Chief Executive Officer, Director of Byrna Technologies Inc. (BYRN) among others. 5 companies showed cluster buying, two or more insiders buying within 7 days, among them RBKB (4 insiders), BYRN (4 insiders), GRML (3 insiders), TSM (2 insiders). For 8 insiders of 24, this was the first purchase of that company's stock on our record. That is fewer than the 58 purchases filed on Jul 22, 2026. A Form 4 is due within two business days of the trade, so most of these purchases were made earlier in the week. Code P also covers shares bought privately from the company, so one large figure can be a negotiated placement rather than buying on the exchange.

Insider purchases filed Jul 23, 2026

Form 4, transaction code P, non-derivative, largest first
CompanyValueInsiderRoleSharesFiled
CIK 1841514$5.0MUAW Chrysler Retirees Medical Benefits Plan10% owner5,6552026-07-23
COE 51Talk Online Education Group$3.1MHuang Jack JiajiaChief Executive Officer, Director, 10% owner178,8002026-07-23
CIK 1841514$3.0MUAW Chrysler Retirees Medical Benefits Plan10% owner3,4312026-07-23
COE 51Talk Online Education Group$2.3MHuang Jack JiajiaChief Executive Officer, Director, 10% owner135,5402026-07-23
CIK 1841514$1.9MUAW Chrysler Retirees Medical Benefits Plan10% owner2,2012026-07-23
COE 51Talk Online Education Group$1.9MHuang Jack JiajiaChief Executive Officer, Director, 10% owner112,5002026-07-23
COE 51Talk Online Education Group$1.9MHuang Jack JiajiaChief Executive Officer, Director, 10% owner111,8402026-07-23
COE 51Talk Online Education Group$1.4MHuang Jack JiajiaChief Executive Officer, Director, 10% owner83,4602026-07-23
ARTV Artiva Biotherapeutics, Inc.$1.2MRa Capital Management, L.p.Director, 10% owner120,5822026-07-23
ARTV Artiva Biotherapeutics, Inc.$835.4KRa Capital Management, L.p.Director, 10% owner84,1242026-07-23
ARTV Artiva Biotherapeutics, Inc.$596.4KRa Capital Management, L.p.Director, 10% owner59,8802026-07-23
ENR Energizer Holdings, Inc.$419.1KAqua Capital, Ltd.10% owner20,0002026-07-23
ENR Energizer Holdings, Inc.$413.4KAqua Capital, Ltd.10% owner20,0002026-07-23
ENR Energizer Holdings, Inc.$412.4KAqua Capital, Ltd.10% owner20,0002026-07-23
ENR Energizer Holdings, Inc.$396.9KAqua Capital, Ltd.10% owner20,0002026-07-23
ENR Energizer Holdings, Inc.$395.4KAqua Capital, Ltd.10% owner20,0002026-07-23
ENR Energizer Holdings, Inc.$393.4KAqua Capital, Ltd.10% owner20,0002026-07-23
RBKB Rhinebeck Bancorp, Inc.$298.5KPatzwahl Nancy KoskeyDirector25,0002026-07-23
MXF Mexico Fund Inc$166.2KSaba Capital Management, L.P.10% owner7,6232026-07-23
CIK 1816389$150.0KMian Arslan HameedInsider9,9802026-07-23
RBKB Rhinebeck Bancorp, Inc.$143.2KLoughlin SuzanneDirector12,0002026-07-23
RBKB Rhinebeck Bancorp, Inc.$121.5KSmith Matthew JamesPresident & CEO, Director10,1252026-07-23
BYRN Byrna Technologies Inc.$102.3KKennedy TJDirector29,0002026-07-23
BXSY Bexil Investment Trust$77.1KWinmill & Co. IncInsider4,5002026-07-23
TSM Taiwan Semiconductor Manufacturing Co Ltd$74.8KTien Bor-ZenVP1,0002026-07-23
TSM Taiwan Semiconductor Manufacturing Co Ltd$74.4KTien Bor-ZenVP1,0002026-07-23
TSM Taiwan Semiconductor Manufacturing Co Ltd$74.1KTien Bor-ZenVP1,0002026-07-23
TSM Taiwan Semiconductor Manufacturing Co Ltd$74.0KTien Bor-ZenVP1,0002026-07-23
BXSY Bexil Investment Trust$66.9KWinmill & Co. IncInsider3,8872026-07-23
BYRN Byrna Technologies Inc.$65.0KDavis Conn Q.Chief Executive Officer, Director18,7682026-07-23
BYRN Byrna Technologies Inc.$65.0KDavis Conn Q.Chief Executive Officer, Director18,7682026-07-23
RBKB Rhinebeck Bancorp, Inc.$59.7KVitale MichaelEVP, Head of Comm Banking5,0002026-07-23
ARTV Artiva Biotherapeutics, Inc.$58.3KRa Capital Management, L.p.Director, 10% owner6,5222026-07-23
GRML Greenland Mines Ltd$55.9KSawyer Jason DavidDirector240,0002026-07-23
BYRN Byrna Technologies Inc.$42.5KHughes HerbertDirector12,5002026-07-23
PML Pimco Municipal Income Fund Ii$37.5KMorris SonyaDirector5,0002026-07-23
AWF Alliancebernstein Global High Income Fund Inc$35.0KWrapp Emilie D.Director3,4322026-07-23
RBKB Rhinebeck Bancorp, Inc.$27.6KSmith Matthew JamesPresident & CEO, Director2,3002026-07-23
RANI Rani Therapeutics Holdings, Inc.$24.8KImran Mir ADirector, 10% owner36,0002026-07-23
BYRN Byrna Technologies Inc.$19.0KHughes HerbertDirector5,4782026-07-23
BYRN Byrna Technologies Inc.$12.7KHughes HerbertDirector3,7032026-07-23
BYRN Byrna Technologies Inc.$12.0KDavis Conn Q.Chief Executive Officer, Director3,4302026-07-23
BYRN Byrna Technologies Inc.$11.7KDavis Conn Q.Chief Executive Officer, Director3,3402026-07-23
IQI Invesco Quality Municipal Income Trust$8.0KO'Reilly Timothy MInsider7802026-07-23
BYRN Byrna Technologies Inc.$6.8KKearnes LaurileeChief Financial Officer2,0002026-07-23
RBKB Rhinebeck Bancorp, Inc.$6.0KLoughlin SuzanneDirector5002026-07-23
MXF Mexico Fund Inc$4.3KSaba Capital Management, L.P.10% owner2002026-07-23
TSM Taiwan Semiconductor Manufacturing Co Ltd$4.0KTien Bor-ZenVP102026-07-23
RCG RENN Fund, Inc.$2.3KHorizon Kinetics Asset Management Llc10% owner7562026-07-23
TPL Texas Pacific Land Corp$427Horizon Kinetics Asset Management Llc10% owner12026-07-23
NVA Nova Minerals Corp$34Gerteisen ChristopherChief Executive Officer, Director52026-07-23
SEC EDGAR · FORM 4 · FILED 2026-07-23 · INFORMATIONAL ONLY

Cluster buys

Two or more insiders at one company within 7 days
RBKB Rhinebeck Bancorp, Inc.
4 insiders within 7 days · $656.4K filed this day
4
BYRN Byrna Technologies Inc.
4 insiders within 7 days · $337.1K filed this day
4
GRML Greenland Mines Ltd
3 insiders within 7 days · $55.9K filed this day
3
TSM Taiwan Semiconductor Manufacturing Co Ltd
2 insiders within 7 days · $301.4K filed this day
2
RANI Rani Therapeutics Holdings, Inc.
2 insiders within 7 days · $24.8K filed this day
2

Source: U.S. Securities and Exchange Commission (EDGAR) and other official government data · Updated 2026-10-12 · For informational purposes only, not investment advice.
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